overwhelming sorrow reverberated from this newtown high school. packed full with people trying to make sense of the unimaginable. >> you keep asking, why? and there's no answer. no answer. >> reporter: this afternoon, families of some of the youngest victims will say good-bye. 6-year-old jack pinto and little noah pozner will be laid to rest. >> chase. jesse. james. god has called them all home. >> last night, president obama joined the grieving and promised their deaths would not be in vain. we can't tolerate this anymore. these tragedies must end. and to end them we must change. >> he gave us a lot of hope and knowing that there's something that's going to be done. >> reporter: police are trying to determine a motive. they say the shooter killed his mother and then broke into zook zook elementary school friday morning. >> it's going to take many, many man hours to attempt to draw this picture together, to put this puzzle together. >> without answers this community waits. >> it's just unimaginable. it's just horrible. >> reporter: hearts heavy as